2019-2023 Duramax GDP Support Package (200-01302)

Fits

Get better throttle response, more torque, and serious towing power on your 2019-2023 6.6L L5P Duramax with GDP's EZ Lynk Support Package. These tunes ensure your truck hits peak performance whether you're pushing for max power, towing, or just daily driving.

Each GDP EZ Lynk Duramax Tune File is specifically crafted to eliminate factory limitations and equip your truck with the power, efficiency, and durability it deserves. These custom tunes offer enhanced fueling, improved shifting, and precise control over the throttle, all while ensuring long-term reliability.

View Notes Tab for Important Product Parameters

We do not support lope tunes or smoke tunes.

Part Number: 200-01302 / 200-01303

• Custom Built Tunes
• Maximizes Torque and Horsepower
• Fine-Tuned Shift Points
• Better Driveability & Fuel Economy
• Safe, Reliable, Uncompromised Power

• Single Tune Files Only

• Can Bus plugs are required (19-23)
• Unlocks the ECM, No additional cables or devices required
• Some 17 and 18 model years may fail the unlock portion of the flash. If this is the case, you need to contact EZ Lynk Support at 1-877-207-5530 to solve the problem remotely. If remote fails, you will need to send your ECM to EZ Lynk to be unlocked.
• TCM Tuning is available, but the TCM needs to be unlocked previously. Click here for an unlocked T87A (17-19 6-speed TCM) or Unlocked T93 TCM (2020+ 10-speed).
• The TCM can also be unlocked with the Commander programmer

Installation Instructions